Install Android 4.2 – 4.1 Combo-Build on Galaxy Nexus [Tutorial]

The international GSM version of Galaxy Nexus has received a new combo build that has been released using the Android 4.2 (Jelly Bean) JOP24G build from the Nexus 4 system dump and the newest official Android 4.1.2 JZO54K build from the Galaxy Nexus, courtesy XDA recognised developer drewgaren.

Users who wish to install the new Combo-build ROM may take a look at the quick guide below but IBTimes UK will not be held responsible if you damage or brick your device.

Requirements:

Ensure your device is rooted and has a custom recovery installed in it

Switch off the phone and boot into TWRP/CWM recovery. To do this, press and hold the Volume Up + Volume Down + Power buttons until the screen turns on. Then, scroll to the Recovery mode option via volume buttons, then choose it using the Power button to restart in recovery.

Tap on Backup and ensure the System, Data and Boot boxes are checked. Now, slide the blue circle button at the bottom to begin the backup of your existing ROM. In the same way you may also restore the ROM if something goes wrong with the new ROM. On completing the backup go back to the main menu

Tap on Wipe and choose Factory Reset and confirm the wiping process. Now, tap on Cache from the Wipe menu and then confirm the wipe process. Tap on Dalvik Cache and once again confirm the wipe and press the back button in order to go back to the main menu

From the main menu, tap on Install and navigate to the DG4.2testbuild.zip file and select the file. Slide the blue circle button to begin the installation

The Android 4.2 test build will begin to get installed. Wait until the installation completes, tap on Reboot button on the TWRP main menu and then tap on System to reboot the Galaxy Nexus

You have successfully installed the Android 4.2 test build on your Galaxy Nexus.